I have UVs across three UDIMs on my character. I'm sending the character to Keyshot using the Bridge from ZBrush. I need to add some maps from Substance. I know ZBrush itself does not handle UDIMs so that may be the root of the problem.
If I set Texture to Texture Map and leave it on the default Box Projection, I can see the texture but it clearly does not fit, even after flipping. If I change to UV Projection the whole model turns black.
If I set to Tiled UV, Keyshot does bring in the correct textures in the Tiles menu, but the whole model turns greenish. When I look at the Material graph only one of those textures is connected and if I connect the other one, the first drops off at the same time.
I'm a newbie with this workflow and have no idea how best to approach it.